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  • Keeping control of your media in your hands

    13 avril 2011, par

    The vocabulary used on this site and around MediaSPIP in general, aims to avoid reference to Web 2.0 and the companies that profit from media-sharing.
    While using MediaSPIP, you are invited to avoid using words like "Brand", "Cloud" and "Market".
    MediaSPIP is designed to facilitate the sharing of creative media online, while allowing authors to retain complete control of their work.
    MediaSPIP aims to be accessible to as many people as possible and development is based on expanding the (...)

  • Amélioration de la version de base

    13 septembre 2013

    Jolie sélection multiple
    Le plugin Chosen permet d’améliorer l’ergonomie des champs de sélection multiple. Voir les deux images suivantes pour comparer.
    Il suffit pour cela d’activer le plugin Chosen (Configuration générale du site > Gestion des plugins), puis de configurer le plugin (Les squelettes > Chosen) en activant l’utilisation de Chosen dans le site public et en spécifiant les éléments de formulaires à améliorer, par exemple select[multiple] pour les listes à sélection multiple (...)

  • Menus personnalisés

    14 novembre 2010, par

    MediaSPIP utilise le plugin Menus pour gérer plusieurs menus configurables pour la navigation.
    Cela permet de laisser aux administrateurs de canaux la possibilité de configurer finement ces menus.
    Menus créés à l’initialisation du site
    Par défaut trois menus sont créés automatiquement à l’initialisation du site : Le menu principal ; Identifiant : barrenav ; Ce menu s’insère en général en haut de la page après le bloc d’entête, son identifiant le rend compatible avec les squelettes basés sur Zpip ; (...)

Sur d’autres sites (10906)

  • FFMPEG 2 Videos transcoded and side by side in 1 frame ?

    3 mars 2016, par dcoffey3296

    I have 2 videos : HEADSHOT.MOV and SCREEN.MOV. They are both large files and I am looking to both shrink (size, bitrate, etc) and place these two side by side in the same, very wide, video frame. The end result would be that when you play the output_video.mp4, you would have a very wide frame with both videos in sync and playing at the same rate.

    Here is the syntatically incorrect version of what I am trying to do :

    ffmpeg -i HEADSHOT.MOV -t 00:02:00 -acodec libfaac -ab 64k -vcodec libx264 -r 30 -pass 1 -s 374x210 -vf "movie=SCREEN.MOV [small]; [in][small] -an -r 30 -pass 1 -s 374x210 overlay=10:10 -t 00:02:00 [out]" -threads 0 output_movie.mp4

    In the above example, I also tried to set a test movie duration for 2 minutes which raises another question, What is the best way to handle 2 movies of varying length (if they are close) ?

    The resources I have found helpful so far are :

    Multiple video sources combined into one and

    http://ffmpeg.org/ffmpeg.html#overlay-1

    Any help/advice is greatly appreciated. I am having trouble with the FFMPEG syntax ! Thank you !

  • FFMPEG wmv conversion to flv

    25 novembre 2012, par Brandon Grossutti

    anyone using ffmpeg

    I have a fairly simple wmv exported by a user from movie maker with standard output and want to convert to .flv using

    C :>ffmpeg -i "E :\Jab Core 4 Recounters.wmv" -vcodec flv "C :\Net Projects\SVN\IntegratedAlgorithmics\src\MediaAdmin\MediaAdmin\bin\Debug\Movies\Jab Core 4 Recounters.flv" -ar 44100

    the output / error i receive is

    FFmpeg version 0.5, Copyright (c) 2000-2009 Fabrice Bellard, et al.
    
  configuration: --enable-gpl --enable-postproc --enable-swscale --enable-avfilt
    
er --enable-avfilter-lavf --enable-pthreads --enable-avisynth --enable-libfaac -
    
-enable-libfaad --enable-libmp3lame --enable-libspeex --enable-libtheora --enabl
    
e-libvorbis --enable-libxvid --enable-libx264 --enable-memalign-hack
    
  libavutil     49.15. 0 / 49.15. 0
    
  libavcodec    52.20. 0 / 52.20. 0
    
  libavformat   52.31. 0 / 52.31. 0
    
  libavdevice   52. 1. 0 / 52. 1. 0
    
  libavfilter    0. 4. 0 /  0. 4. 0
    
  libswscale     0. 7. 1 /  0. 7. 1
    
  libpostproc   51. 2. 0 / 51. 2. 0
    
  built on Mar 16 2009 16:09:18, gcc: 4.2.4 [Sherpya]
    
[wmv3 @ 0x1c0d490]Extra data: 8 bits left, value: 0
    

    
Seems stream 1 codec frame rate differs from container frame rate: 1000.00 (1000
    
/1) -> 30.00 (30/1)
    
Input #0, asf, from 'E:\Jab Core 4 Recounters.wmv':
    
  Duration: 00:01:55.99, start: 5.000000, bitrate: 813 kb/s
    
    Stream #0.0: Audio: wmav2, 48000 Hz, stereo, s16, 192 kb/s
    
    Stream #0.1: Video: wmv3, yuv420p, 640x480, 586 kb/s, 30 tbr, 1k tbn, 1k tbc
    

    
Output #0, flv, to 'C:\Net Projects\SVN\IntegratedAlgorithmics\src\MediaAdmin\Me
    
diaAdmin\bin\Debug\Movies\Jab Core 4 Recounters.flv':
    
    Stream #0.0: Video: flv, yuv420p, 640x480, q=2-31, 200 kb/s, 90k tbn, 30 tbc
    

    
    Stream #0.1: Audio: libmp3lame, 48000 Hz, stereo, s16, 64 kb/s
    
Stream mapping:
    
  Stream #0.1 -> #0.0
    
  Stream #0.0 -> #0.1
    
[wmv3 @ 0x1c0d490]Extra data: 8 bits left, value: 0
    
[libmp3lame @ 0x1c0d8d0]flv does not support that sample rate, choose from (4410
    
0, 22050, 11025).
    
Could not write header for output file #0 (incorrect codec parameters ?)

    i added th -ar switch when i got the error the first time

    the codec info i have on the file is as follows

    General
    
Complete name                    : E:\Jab Core 4 Recounters.wmv
    
Format                           : Windows Media
    
File size                        : 11.3 MiB
    
Duration                         : 2mn 0s
    
Overall bit rate mode            : Variable
    
Overall bit rate                 : 780 Kbps
    
Maximum Overall bit rate         : 949 Kbps
    
Encoded date                     : UTC 2009-03-07 07:02:41.121
    
Writing application              :  6.0.6000.16386 / Windows Movie Maker
    
Application                      : Windows Movie Maker 6.0.6000.16386
    

    
Video
    
ID                               : 2
    
Format                           : VC-1
    
Format profile                   : MP@ML
    
Codec ID                         : WMV3
    
Codec ID/Info                    : Windows Media Video 9
    
Codec ID/Hint                    : WMV3
    
Duration                         : 2mn 0s
    
Bit rate mode                    : Variable
    
Bit rate                         : 587 Kbps
    
Width                            : 640 pixels
    
Height                           : 480 pixels
    
Display aspect ratio             : 4/3
    
Frame rate                       : 30.000 fps
    
Resolution                       : 24 bits
    
Scan type                        : Progressive
    
Bits/(Pixel*Frame)               : 0.064
    
Stream size                      : 8.46 MiB (75%)
    
Language                         : en-us
    

    
Audio
    
ID                               : 1
    
Format                           : WMA2
    
Format profile                   : L3
    
Codec ID                         : 161
    
Codec ID/Info                    : Windows Media Audio 2
    
Description of the codec         : Windows Media Audio 9.2 - VBR Quality 90, 48 kHz, stereo 1-pass VBR
    
Duration                         : 2mn 0s
    
Bit rate mode                    : Variable
    
Bit rate                         : 186 Kbps
    
Channel(s)                       : 2 channels
    
Sampling rate                    : 48.0 KHz
    
Resolution                       : 16 bits
    
Stream size                      : 2.68 MiB (24%)
    
Language                         : en-us

    i see alot of people with this issue with so solution or cause

    any ideas would be helpful
    thanks in advance

  • ffmpeg and gnu parallel

    16 août 2013, par souvik

    My work would require me to encode a few thousand movies in a few days. Each movie needs to be encoded in 3 different formats. I use ffmpeg to output these formats in parallel with a single read of the input source as detailed here : http://ffmpeg.org/trac/ffmpeg/wiki/Creating%20multiple%20outputs

    In addition, I am using GNU Parallel to encode from multiple video files in parallel. We have four blade servers of different configurations (48, 32, 16 and 16 cores) encoding videos in parallel. Ideally, we should be able to encode 112 videos in parallel.

    However, it seems that encoding completes faster on machines with lesser cores. I have 16 completed encodes on the 16 core servers in around 4 hours, while it takes close to 10 hours for 48 encodes to complete on the 48 core system. What could be the bottleneck ? A typical encode command is as follows :

    ffmpeg -i sample.mpg -y -vcodec libx264 -vprofile baseline -level 30 -acodec libfdk_aac -ab 128k -ac 2 -b:v 500K -threads 1  encoded/sample_enc.mp4

    Any pointers highly appreciated. Thanks !

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